/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.bpmn.behavior;

import org.activiti.engine.ActivitiException;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
import org.activiti.engine.impl.TaskContext;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.delegate.JavaDelegateInvocation;
import org.activiti.engine.impl.persistence.entity.TaskEntity;
import org.activiti.engine.impl.pvm.delegate.ActivityExecution;
import org.activiti.engine.impl.pvm.delegate.SignallableActivityBehavior;
import org.activiti.engine.impl.task.TaskDefinition;


/**
 * Superclass for all 'connectable' BPMN 2.0 process elements: tasks, gateways and events.
 * This means that any subclass can be the source or target of a sequenceflow.
 * 
 * Corresponds with the notion of the 'flownode' in BPMN 2.0.
 * 
 * @author Joram Barrez
 */
public abstract class FlowNodeActivityBehavior implements SignallableActivityBehavior {
  
  protected BpmnActivityBehavior bpmnActivityBehavior = new BpmnActivityBehavior();
  protected TaskDefinition taskDefinition;
  public FlowNodeActivityBehavior()
  {
	  
  }
  public FlowNodeActivityBehavior(TaskDefinition taskDefinition)
  {
	  this.taskDefinition = taskDefinition;
  }
 
  public void execute(DelegateExecution execution,JavaDelegate javaDelegate) throws Exception {
	    Context.getProcessEngineConfiguration()
	      .getDelegateInterceptor()
	      .handleInvocation(new JavaDelegateInvocation(javaDelegate, execution));    
	  }
  /**
   * Default behaviour: just leave the activity with no extra functionality.
   */
  public void execute(ActivityExecution execution) throws Exception {
    leave(execution);
  }
  
  /**
   * Default way of leaving a BPMN 2.0 activity: evaluate the conditions on the
   * outgoing sequence flow and take those that evaluate to true.
   */
  protected void leave(ActivityExecution execution) {
    bpmnActivityBehavior.performDefaultOutgoingBehavior(execution);
  }
  
//  protected void leave(ActivityExecution execution,TaskContext taskContext)
//  {
//	  bpmnActivityBehavior.performDefaultOutgoingBehavior(execution, taskContext);
//  }
  
  protected void leaveIgnoreConditions(ActivityExecution activityContext) {
    bpmnActivityBehavior.performIgnoreConditionsOutgoingBehavior(activityContext);
  }

  public void signal(ActivityExecution execution, String signalName, Object signalData) throws Exception {
    // concrete activity behaviours that do accept signals should override this method;
    throw new ActivitiException("this activity doesn't accept signals");
  }
  
//  public void signal(ActivityExecution execution, String signalName, Object signalData,TaskContext taskContext) throws Exception {
//    // concrete activity behaviours that do accept signals should override this method;
//    throw new ActivitiException("this activity doesn't accept signals");
//  }
  
}
